package com.hcs.chenyu.library;

import android.os.Bundle;

import androidx.appcompat.app.AppCompatActivity;

public class Book extends AppCompatActivity {
    public String studentname;
    public String majoy;
    public String booknum;
    public String studentid;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }

}